Growth of Graphene/h-BN Heterostructures on Recyclable Pt Foils by One-Batch Chemical Vapor Deposition

Qian, Yongteng; Ngoc, Huynh Van; Kang, Dae Joon

doi:10.1038/s41598-017-17432-9

Cited by 20 publications

(13 citation statements)

References 32 publications

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“…The layers of GR can be determined by observing the ratio of the intensity of the G peak (1600 cm –1 ) to 2D peak (2700 cm –1 ) in Raman spectra. As shown in Figure S3e, the intensity of the 2D peak over G peak ratio is less than 1, indicating the successful fabrication of multilayer GR. − Meanwhile, the TEM image (Figure S3f) further confirms our claim of multilayer GR. The AFM images (Figure S3g) and the corresponding height profile in the inset suggest that the thickness of commercial GR is a two-dimensional material with a thickness of 6 nm.…”

supporting

confidence: 61%

High-Performance Coaxial Asymmetry Fibrous Supercapacitors with a Poly(vinyl alcohol)–Montmorillonite Separator

Bai

et al. 2021

Nano Lett.

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Fibrous supercapacitors have garnered great interest from researchers because of their large electrode/electrolyte interface area, short ion transport path, and high flexibility. However, obtaining a thin gel electrolyte interlayer with a high ion transport rate and uniform thickness is still challenging. Here, we proposed an efficient wet-spinning technique to fabricate uniform polyvinyl-montmorillonite tubular layers for the preparation of a high-performance coaxial asymmetry fibrous supercapacitor (AFSC). The coaxial AFSC shows ultrahigh energy densities in the range of 2.86−4.04 μW h cm −2 at power densities of 0.16−1.61 mW cm −2 while maintaining a long cycling life (94% retention even after 20 000 cycles). After charging at a constant voltage of 2.4 V for 30 s, the flexible watchband which is composed of three series-connected AFSCs could power a commercial electronic watch for more than 2 min. This work provides a universal strategy to fabricate high-performance and wearable energy storage devices.

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supporting

confidence: 61%

High-Performance Coaxial Asymmetry Fibrous Supercapacitors with a Poly(vinyl alcohol)–Montmorillonite Separator

Bai

et al. 2021

Nano Lett.

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“…Notable steps forward have been made in the growth of graphene on metals and on silicon carbide (SiC), although it is more difficult to exploit the latter process for NVM applications due to its ultimate size limitations and inability to be integrated in a Si‐flow process. Progress is also reported on the growth of h‐BN and TMD materials. However, the growth of large‐area monolayer or few‐layer single crystals of h‐BN and TMDs is still a major challenge that will require continued significant research efforts.…”

Section: D Materials: Production and Processingmentioning

confidence: 99%

Nonvolatile Memories Based on Graphene and Related 2D Materials

et al. 2019

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The pervasiveness of information technologies is generating an impressive amount of data, which need to be accessed very quickly. Nonvolatile memories (NVMs) are making inroads into high‐capacity storage to replace hard disk drives, fuelling the expansion of the global storage memory market. As silicon‐based flash memories are approaching their fundamental limit, vertical stacking of multiple memory cell layers, innovative device concepts, and novel materials are being investigated. In this context, emerging 2D materials, such as graphene, transition metal dichalcogenides, and black phosphorous, offer a host of physical and chemical properties, which could both improve existing memory technologies and enable the next generation of low‐cost, flexible, and wearable storage devices. Herein, an overview of graphene and related 2D materials (GRMs) in different types of NVM cells is provided, including resistive random‐access, flash, magnetic and phase‐change memories. The physical and chemical mechanisms underlying the switching of GRM‐based memory devices studied in the last decade are discussed. Although at this stage most of the proof‐of‐concept devices investigated do not compete with state‐of‐the‐art devices, a number of promising technological advancements have emerged. Here, the most relevant material properties and device structures are analyzed, emphasizing opportunities and challenges toward the realization of practical NVM devices.

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“…However, this can be further improved by incorporating h-BN as a supporting layer during this direct CVD growth of bilayer graphene. 54,55 2.3. Large-Area Growth of Bilayer Graphene on Wafer.…”

Section: Resultsmentioning

confidence: 99%

“…Apart from that, the charge scatterings from the surface of the SiO 2 layer may also contribute to the low values of carrier mobility. However, this can be further improved by incorporating h -BN as a supporting layer during this direct CVD growth of bilayer graphene. , …”

Section: Resultsmentioning

confidence: 99%

Practical Route for the Low-Temperature Growth of Large-Area Bilayer Graphene on Polycrystalline Nickel by Cold-Wall Chemical Vapor Deposition

et al. 2021

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We report a practical chemical vapor deposition (CVD) route to produce bilayer graphene on a polycrystalline Ni film from liquid benzene (C 6 H 6 ) source at a temperature as low as 400 °C in a vertical cold-wall reaction chamber. The low activation energy of C 6 H 6 and the low solubility of carbon in Ni at such a low temperature play a key role in enabling the growth of large-area bilayer graphene in a controlled manner by a Ni surface-mediated reaction. All experiments performed using this method are reproducible with growth capabilities up to an 8 in. wafer-scale substrate. Raman spectra analysis, high-resolution transmission electron microscopy, and selective area electron diffraction studies confirm the growth of Bernal-stacked bilayer graphene with good uniformity over large areas. Electrical characterization studies indicate that the bilayer graphene behaves much like a semiconductor with predominant p-type doping. These findings provide important insights into the wafer-scale fabrication of low-temperature CVD bilayer graphene for next-generation nanoelectronics.

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Growth of Graphene/h-BN Heterostructures on Recyclable Pt Foils by One-Batch Chemical Vapor Deposition

Cited by 20 publications

References 32 publications

High-Performance Coaxial Asymmetry Fibrous Supercapacitors with a Poly(vinyl alcohol)–Montmorillonite Separator

High-Performance Coaxial Asymmetry Fibrous Supercapacitors with a Poly(vinyl alcohol)–Montmorillonite Separator

Nonvolatile Memories Based on Graphene and Related 2D Materials

Practical Route for the Low-Temperature Growth of Large-Area Bilayer Graphene on Polycrystalline Nickel by Cold-Wall Chemical Vapor Deposition

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